The participle in this sentence is "sweating". It's a participle of the verb " to sweat" and it's a present participle: which we know because it ends with an -ing (past participles end with "-ed).
Answer: A. "full of pollutants"
Explanation:
A would be the Pollute-tion
B would be the Pollute-able
C would be the Pollute
D would be Pollute-er
